<template>
   <div>
    <!-- 无id时, 可以使用index(反正也是就地更新) -->
    <div
      style="display: inline-block" v-for="(item,index) in arr" :key="index"
    >
    <input v-model="sum1" :value="item" type="checkbox" />
      <span>{{ item }}</span>
    </div>
    <p>你选中的元素, 累加的值和为:{{totalPrice}} </p>
  </div>
</template>

<script>
export default {
  name: 'WorkspaceJsonApp',

  data() {
    return {
     arr:[9, 15, 19, 25, 29, 31, 48, 57, 62, 79, 87],
     sum1:[]
    };
  },

  methods: {
   
  },
  computed:{
    totalPrice(){
      let sum =0
      this.sum1.forEach(item=>sum+=item)
      return sum
    }

  }
};
</script>

<style scoped>

</style>